Payroll transaction

How can i allocate bank transcations to payroll transactions if the amount are differnet

For example

WK1 - $1,647.50

WK2 - $1,781.25

WK3 - $1,742.75

Total 5,171.50

Payments 

$2,312.50

$2,531.25

$327.75

Total $5,11.50